The long unsupported high-end Nikon Super Coolscan/ Coolscan devices only has drivers up to the 32bit version of Windows XP. These drivers may work on other later 32bit versions of Windows with some force installation. Mac OS stops at 10.1, no word on whether it works on later versions. Stuffit Expander is used to expand .sit files. Read more here: https://www.nikonimgsupport.com/eu/BV_article?articleNo=000044892&configured=1&lang=en_GB